What number must be added to the expression below to complete the square?
2 answers:
Answer:
1/4
Step-by-step explanation:
To complete the square, use the formula (b/2)^2
The Quadratic Formula is: a+bx+c
thus a = x^2, b = -1
You then plug in the numbers in the formula above
(b/2)^2 = (-1/2)^2 = (1/2)^2 =1/4
D. 1/4
Explanation:
a perfect square is written in the form
(1)
In our problem, we have this perfect square:
(2)
with C being unknown. However, by comparing (1) and (2), we know that

So, we find

and therefore, the missing term must be

so the complete square is

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